package com.itheima_09.StringBuilder;

public class Test01 {
    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder("helloworld");
        System.out.println(sb);
        sb.append("hello");
        System.out.println(sb);
        sb.append("world").append("java").append(100);
        System.out.println(sb);
        sb.reverse();
        System.out.println(sb);
    }
}
